Culinary apparatus.



PATENTED JUNE 16, 1908.

w. s'. HADAWAY, JR. CULINARY APPARATUS.

APPLICATION FILED JULY 5, 1907.

INVENTOR WITNESSES:

ATTORNEY wwzwp UNITED STATES P TENT oFF oE.

WILLIAM S. HAD AWAY, .l'lh, OF EAST ORAN G1), NEW J JERSEY, ASSIGNOR THA DAWAY ELEC- TRIO HEATING & ENGINEERING 60., A CORPORATION OF REVYORK.

CULINARY APPARATUS.

To all whom it may concern:

- Be it known that I, WILLIAM S. HADAWAY, Jr., a citizen of the UnitedStates, and a resident of East Orange, in the county of Essex and Stateof New Jersey, have invented a new and useful Improvement in- CulinaryApparatus, of which the following is a specication.

My invention relates to culinary apparatus and similar devices and hasspecial reference to1 electrically heated fluid-containing vesse s.

The object of my invention is to provide improved means for rapidly andeconomically heating water or other liquid in double boil ers,:glue potsand'like. apparatus.

vide wit A lue Ipot, .as-usually constructed, is roan outer acket orvessel in w nch water is contained and to which heat 1SLpplied so thatthe Inc, whichis contained inan iimer rece tac e or pot, may not beinjured by the irect application of dry heat to the Walls of thereceptacle.v

Devicesof this class are employed for various other-purposes and mypresent invention is not restricted to any specific application. Figure1', of the accompanyingdrawings,

is a sectional elevation-ofa device'constructed In accordance with myinvention and Fig. 2

' the inner vesselin the form of steam, so that j the primary object ofthe heater is accom flange 6 that e is a diagrammatic view of thecircuit connections for theelec'tric'heater shown in Fig. 1,

The'device illustrated is specially adapted for use as a glue otand, forconvenience, it will be hereina ter so designated." By a singlearrangement and combination ofgparts' I have produced a device which maycontain a relatively large volume of water so that the possibilities ofoverheating the device are minimized and at the same timeia small ortionof the water is quickly heated to a igh temperature-and carriedagainstthe walls of plished at the earliest {possible moment,

Referring to the drawings, the glue gpothere illustrated comprises abase 1 of castiron or other suitable material, a cylindrical.

jacket 2 secured to the base 1, a fiuid-contai-ning vessel 3 and "aninner receptacle or pot 4. The -flui-d-containing vessel 3 has upwardlyflaring walls 5 which culminate in a ages the upper edgeof the jacket 2.The ottom of the vessel is extended to form a substantially cylindricalSpecification of Letters Patent.

Application filed July 5, 1907. Serial No 382,394.

and the clurin'ber 17 is not entire Patented June 1c, 1908.

projection 7 which is 'oined'to the side walls 5 by a shoulder 8 andorms a water reservoir. The inner receptacle 01' pct 4 is also rovidedwith upwardly flaring side walls 9 wli minate in a flange or rim 10 thatfits over and isisupported by the fiange ,6 on the vessel 3.

The side walls of the inner receptacle 4 are morefiaring than those ofthe vessel 3 and its bottom is at substantially the same elevation asthe shoulder 8 of the said vessel. In this way, an annular steam chamberis provided between the walls of the two receptacles and a relativelylarge water reservoir 18 provided below the inner receptacle. I

An electric heating'device 11 comprises a pair of heatin coils 12- and13 that surround the cylindrica projection 7 and are insulated from itand from each other. In order that the heat generated in the coils 12and 13 may substantially all be conducted through the projection 7 ,intothe water, a drum or closed cylinder 14 isiitted over the lower end ofthe vessel 3 and depends therefrom a suflic'ient ich' culr distance toprovide an annular air chamber will be inconsiderable because aircirculation is impossible and a stationary body of 'airis a oor heatconductor.

fthe entire volume of the water contained in the reservoir formed by thecylindrical rejection -7 were; permitted to circulate complished'in theinner receptacle 4 until all the w-ate mhad been raised to point. Inorder to :avoid this delay, I provide a separator 16 which coi'npniscs asealed annular chamber 17, containin r airor some other heat insulatingmatter, the outer :wall of which is substantially cylindrical ttlltll-lSof a slightly smaller diameter than the inside diameter of theprojection 7 withinwhich it located. In order that the chamber 17.andthe rejection 7 may be -'concentr icallly located: the :bottom of theforn'1er is extended outwardly to lit the latter.

It will of course be understood that the circulation of water betweenthe )ro'jection 7 y prevented and that the amount of water in the saidspace is :so small'that it will be readily and sj uickly heated to theevaporating point.

he separator will usually assume the form of a cylindrical dish havingone 011 more the boiling "reely, very little useful work would be :ac-'

small openings 18 in its bottom, and its chamber 17 Will (rrmstitute ahcabmsulatnip; barrler between the thin tilni ol'water adjacent to theheated walls of the chamber 7 and the main body or water.

? The circuit connections for the electric heating coils may, of"course, be varied to suit existing c nditions, a convenient arrangementbeing illustrated in Fig. 2' in which a single coil of the heater isfirst connected directly across the circuit so that a high heat isapplied for the first step in the process, such as melting the glue. anda second coil is afterward connected in series with the iirst forapplying a low or running heat which is suilicient to keep the glue in amolten state. These circuit changes are accomplished by a jumper 10which may he replaced by any other suitable switching device.

Energy may be applied to the heating coils.

from either an alternating or 'a direct current source'so long as theresistance of the coils and the voltage of the line are properly relatedto each other. The receptacles 3 and 4 and the separator 16 areureter-ably construct'ed oi spun or stainpec copper. The heating coil towhich energy is applied initially should be secured directly to theprojection 7 and the other coil, which is in service under normaloperating conditions, may advantageously be bound over the first coil.

The coils themselves may be constructed in'various ways but it isbelieved that the best results will be secured by the use of ribbonresistance strips wound helically about the outer surface ol the chamberand insulated therefrom by mica or other heat-resisting? insulation.

1 claim as my invention:

1. The combination with a fluid-containing vessel, and external meansfor imparting heat thereto, cl 0. heat-insulating barrier located withinthe vessel for determining the fluid circulation.

:2. The combination with a fluidc'ontaining vessel, and external meansfor imparting heat thereto, of an air-tight annular chamher locatedwithin the vessel and dividing the fluid so as to determine itscirculation.

3. The combination with a iiuid-containing vessel and external means forimparting heat to. the side Walls of the vcs'scl near its bottom, of anair-tight annular chamber located Within the vessel adjacent to theheated walls and slightly removed therefrom, said chamber dividing theliquid so as to determineits circulation.

4. The combination with an inner rece tacle, a fluid-containing vesselin which t to receptacle is suspended, an external means for im artingheat to the vessel, of means for divi ing theliquid to produce arelatively thin film adjacent to the heated wall of the vessel.

5. The combination with an inner recep-- taclc, a fluid-containingvessel of material y co es-5 greater depth than the inner receptacle andin which the latter is suspended;thereby producing a reservoir at thebottom, of the iluidcontaining vessel, and an external means forimparting heat to the vessel, of means for so dividing the liquid. inthe reservoir as to produce a thin film adjacent to its heated. wall.

(3. The combination with. an inner .rece tacle, a fluid-containingvessel in which tl ie receptacle is suspended,- and an external meansfor imparting heat to the vessel, of a heat-insulating partitionslightly separated from the heated wall of the vessel for dividing theliquid to produce a. relatively thin film adjacent to said Wall.

7. The combination with an inner receptacle, and a iluid-containingvessel of mate rially greater depth than the inner receptacle and inwhich the latter is suspended, thereby producing a reservoir at thebottom of the tluid-contamin vessel, of heatnnsulatmg )artition that isslightly separated from the heated wall of the vessel for so dividingthe liquid in the reservoir as to produce thin film ad'acent to saidwall.

8. T e combination with an inner receptacle, a fluid-containing vesselin which the rcceptacle is suspended, and an external means forimparting heat to the vessel, of an annular chamber filled with heatinsulating matter and located within the vessel and slightly separatedfrom its side walls for dividing the liquid to produce-a relatively thinfilm adj acent to said nails.

9. The combination with an inner receptacle, and a iluid-containingvessel of materially greater depth than the inner receptacle and inwhich the latter is suspended, thereby )roducing a reservoir at thebottom of the ind-containing vessel, of an air-tight annu-' lar chamberwithin the vessel and. slightly separated from its side Walls for sodividing the li uid in the res .v'oir as to produce a thin in adjacentto said walls.

10. The combination with a fluid-containing vessel of relatively thinheat conducting material and an electric heating device secured to anouter wall of the vessel, of means for dividing the liquid to produce arelatively thin film adjacent to the heated wall of the vessel. A I

11. The combination with a fluid-containing vessel of relatively thinheatconducting material and an electric heatin device se-' cured to theouter side wallsof the vessel, of an annular chamber filled with heatinsulating matter and located within the vessel and sli htly separatedfrom its side Walls, for dividing the liquid to roduce a relatively thinfilm adjacent to sai walls. I

12. The combination with a fluid-containingvessel of relatively thinheat-conducting material and an electric heating device socured to theside walls of the vessel, of an airtight annular chamber within thevessel and see ese sli htly se ara'ted it .in its side walls for all virling the iquid to produce a relatively thin film adjacent to said walls.

13. The. combination with a i-hiithcentc-in. ing vessel havingreletively thin wells of heat-condueting material, a; second vesselsuspendec Within the first and an electric heating device secured to anenter well of the fluid-containing vessel, of means for so dividing theliquid in the reservoir as to produce athin film adjacent to its heatedwell 1.4. The combinationfwith a iluid-centsining vessel havingrelatively thin Walls of heat-conducting material, a second vesselsuspended within the first and an electric heating device secured to theside walls of the iluirLcentsining vessel, of an annular chamber filledwith heat-insulating hatter and located within the vessel and s vseparated from its side Walls for so d; .i.

the liquid in the reservoir as to produce a thin film adjacent to saidWalls.

15. The combination *ith a. lluid-containing vessel having relativelythin Walls of hcatdnsnlsting material, a second vessel suspended "withinthe first and an electric heating device secured to an outer wall 01"the fluid-centaining vessel, of en sir-tight ennu- 1:11 chamber Withinthe vessel and sli htly sepemted from said outer Wall for so dividingthe liriuid in the reservoir as to produce a thin ii in adjacent tc saidwell.

In testimony whereof, I have hereunto subscribed my name this 29th dayof June,

WllJl ili ild. S, HADAVVAY, JR.

